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Highly Selective Fluorescent Probe Based on 2‐(2′‐Dansylamidophenyl)‐Thiazole for Sequential Sensing of Copper(II) and Iodide Ions
Author(s) -
Kim BoYeon,
Pandith Anup,
Cho Chan Sik,
Kim HongSeok
Publication year - 2019
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.11663
Subject(s) - iodide , chemistry , acetonitrile , copper , intramolecular force , fluorescence , photochemistry , inorganic chemistry , ion , electron transfer , stereochemistry , organic chemistry , physics , quantum mechanics
A novel highly selective fluorescent probe based on 2‐(2′‐dansylamidophenyl)‐4‐phenylthiazole ( 1 ) is developed for sequential sensing of copper(II) and iodide ions in acetonitrile. The fluorescence mechanism is based on cation‐induced inhibition of excited‐state intramolecular hydrogen transfer, intramolecular charge transfer, and metal–ligand electron/charge transfer. Subsequent iodide‐induced extrusion of copper(II) results in partial revival of fluorescence. Probe 1 and its ensemble with copper (II) show high selectivity for copper(II) and iodide ions, respectively, in acetonitrile solution.